Locks go into deadlock and passenger window goes down sometimes when locking

[crackers 0]

Hi,

1992 VR6 (Left-hand drive)

I only have a key (no remote) and sometimes when I lock the car my passenger window goes down!

Secondly, the drivers deadlock came on while the door was open (at least I think it was a deadlock. The latch closed and interior pull knob or key would not release it. After ages fumbling, locking and unlocking I finally got it to open.

The opposite door did the same today.

Is there a quick fix for this? Anyone else had the same problem?

If it's not a 'feature' I am guessing I have some faulty electrics

Cheers

Phil